Steam-boiler



(NoModL) v E. PREY. G. P MOTTER/8U J. REIUHLEY.

STEAM BOI L'ER. No. 333,846. Patented Jan. 5, 1886.

WITNESSES 1.7V V JV'TORS UNITED STATES PATENT OFFICE.

ENOS FREY, GEORGE FREDERICK MOTTER, AND J AOOB REIOHLEY, OF YORK, PENNSYLVANIA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 333,846, dated January 5, 1886.

Application filed October 15, 1885.

To all whom it may concern:

Be it known that we, ENos FREY, GEO. F. MoTTER, and J AGOB REIOHLEY, citizens of the United States, residing at York, in the county of York and State of Pennsylvania, have invented certain new and useful Improvementsin Steam-Boilers, ofwhich the following is a specification, reference being bad therein to the accompanying drawings.

A serious objection to theme of boilers of the character shown lies in the fact that the heat-flues, being directly under a waterchamber, cannot be gotten at for the purpose of cleaning. except by, in a measure, tearing the device down.

To remedy this defect is the object of our invention, which we accomplish by carrying a coincident series of flues through the said water-chamber, and having them open into a common passage, and on the top of this passage acorresponding series of normallyclosed openings, the whole arranged to give a clear passage from the exterior through the whole length of the flues.

In the drawings, Figure 1 represents a vertical section through the device; Fig. 2, a plan View of the ring covering the upper series of flues, and Fig. 3, a detail section through one side of the same, showing one of the caps in place.

The boiler A is provided with an interior fire-box, B, which occupies the lower port-ion thereof, and has its top portion enlarged, as at B, the upper portion of said boiler forming a water-chamber, O, which also forms a steam -chamber. Leading downward from the top of the boiler and into the fire-box is the magazine D, provided with a cover, E. The fire-box being of less diameter than the boiler in which it is contained, is hence surrounded by awater-jacket, and it is through this jacket that the flues or tubes F pass, leading from the enlarged top B of the fire-box downward through the said jacket, as stated, and opening at the bottom into a space between said boiler-shell and the incasing masonry G. The products of combustion pass through these tubes and the said space, finally escaping through the smoke-exit H.

Thus far the description has related to those constructions over which the following- Serial No. 179,994. (No model.)

described constructions constitute the improvement referred to, the preceding matter being necessary to a full and clear understanding of the pertinency of the said improvement. On top the of boiler-shell is secured achambered ring,I,having a series of holes,K, through its upper surface. Extending from the top 13 of the fire-box, from points directly over the tubes or flues F, are tubes L, extending through the water-chamber O and openinginto the chamber in the ring I. Each of the holes K is normally closed by a cap, M, which may rest therein only, or be so secured as to be readily removable.

The purpose of the flues or tubes L is, as before stated, to permit the ready cleaning of the tines or tubes F, which otherwise would be inaccessible. Thisis accomplished by removing the caps which are exposed on top the boiler, when a straight clear passage is obtained. The tubes or flues L also serve to heat the water above the fire-box, and to superheat the steam.

We claim- 1. In a boiler, a fire-box located within the same, having an enlarged top and surrounded by a water-jacket, tubes or flues leading downward through said jacket from said enlarged top, and tubes or flues leading upward from said enlarged top to openings communicating with the exterior of said boiler, the upper and lower tubes being coincident, substantially as specified.

2. In a boiler, a fire-box located within the lower portion ofthe same, tubes or flues lead ing downward from the upper portion thereof, tubes or flues registering with the downward flues and leading upward from said fire-box, a chambered ring provided with holes, and receiving said upward-extending flues, and caps normally closing said holes, substantially as specified.

In testimony whereof we affix our signatures in presence of two witnesses.

ENOS FREY. GEORGE FREDERICK MOTTER. JACOB REIOHLEY.

Witnesses:

WILLIAM H. RUBY, DANIEL LUOKING. 

